CN214095171U

CN214095171U - Helium purification device

Info

Publication number: CN214095171U
Application number: CN202023288019.0U
Authority: CN
Inventors: 汤忠喜
Original assignee: Techpool Nanjing Industrial Technology Co ltd
Current assignee: Techpool Nanjing Industrial Technology Co ltd
Priority date: 2020-12-29
Filing date: 2020-12-29
Publication date: 2021-08-31
Anticipated expiration: 2030-12-29

Abstract

The utility model relates to a helium purifying device, which comprises a vacuum cover and a main body arranged in the vacuum cover, wherein the main body comprises a primary heat exchanger, a secondary heat exchanger, a tertiary heat exchanger, a primary liquid separator, a secondary liquid separator, a tertiary liquid separator, a dirty helium inlet pipeline and a pure helium exhaust pipeline; one end of the dirty helium inlet pipeline is connected to a first interface of the primary heat exchanger, a second interface of the primary heat exchanger is connected with a first interface of the secondary heat exchanger through a primary liquid separator, and a second interface of the secondary heat exchanger is connected with a first interface of the tertiary heat exchanger through a secondary liquid separator; the utility model discloses can provide the cold volume of the different warm areas more than three at least and realize the multistage separation, and then can carry out effective purification to the dirty helium that impurity composition is complicated to application scope has been enlarged and the purification effect has been improved.

Description

Helium purification device

Technical Field

The utility model relates to a helium purification device.

Background

Helium is widely applied to industries such as industry, scientific research, medical treatment and the like, even plays an important role in military and national defense, is once listed as a strategic reserve resource by the United states, and domestic helium almost completely depends on import; the application of helium in industry, scientific research, medical treatment and the like requires high purity, so that the purification of helium is very important work in the field of helium application.

The existing helium purification device adopts a low-temperature condensation mode to purify helium, the adopted cold source is a low-temperature refrigerator or low-temperature liquid, the cooling temperature zone is single, only single-stage or two-stage separation can be provided, the purification effect is poor, the polluted helium with complex impurity components cannot be treated, the application range is small, and further improvement is required.

SUMMERY OF THE UTILITY MODEL

To the present situation of the above prior art, the technical problem to be solved by the utility model is to provide a helium purification device which realizes the multi-stage separation to enlarge the application range and improve the purification effect.

The utility model provides a technical scheme that above-mentioned technical problem adopted does: the helium purifying device is characterized by comprising a vacuum cover and a main body arranged in the vacuum cover, wherein the main body comprises a primary heat exchanger, a secondary heat exchanger, a tertiary heat exchanger, a primary liquid separator, a secondary liquid separator, a tertiary liquid separator, a dirty helium inlet pipeline and a pure helium exhaust pipeline; one end of the dirty helium inlet pipeline is connected to a first interface of the first-stage heat exchanger, a second interface of the first-stage heat exchanger is connected with a first interface of the second-stage heat exchanger through a first-stage liquid distributor, a second interface of the second-stage heat exchanger is connected with a first interface of the third-stage heat exchanger through a second-stage liquid distributor, a second interface of the third-stage heat exchanger is connected with a third interface of the third-stage heat exchanger through a third-stage liquid distributor, a fourth interface of the third-stage heat exchanger is connected with a third interface of the second-stage heat exchanger, a fourth interface of the second-stage heat exchanger is connected with a third interface of the first-stage heat exchanger, and one end of the pure helium exhaust pipeline is connected to a fourth interface of the first-stage heat exchanger.

Preferably, the main body further comprises a refrigeration unit, the refrigeration unit comprising a first pipeline, a second pipeline, a third pipeline, a fourth pipeline, a fifth pipeline, a sixth pipeline, a cold source, a circulation pump and a heat exchanger; one end of the first pipeline is connected with a fifth interface of the first-stage heat exchanger, one end of the second pipeline is connected with a fifth interface of the second-stage heat exchanger, one end of the third pipeline is connected with a fifth interface of the third-stage heat exchanger, the other end of the first pipeline, the other end of the second pipeline and the other end of the third pipeline are all connected in parallel to a liquid inlet of a circulating pump, and the liquid outlet of the circulating pump is connected with a gas inlet of the heat exchanger; one end of the fourth pipeline is connected with a sixth interface of the primary heat exchanger, one end of the fifth pipeline is connected with a sixth interface of the secondary heat exchanger, one end of the sixth pipeline is connected with a sixth interface of the tertiary heat exchanger, and the other end of the fourth pipeline, the other end of the fifth pipeline and the other end of the sixth pipeline are connected in parallel and connected to a gas outlet of the heat exchanger; and a refrigerant outlet of the cold source is connected with a refrigerant inlet of the heat exchanger, and a refrigerant outlet of the heat exchanger is connected with a refrigerant inlet of the cold source.

Preferably, the refrigeration unit further comprises a first regulating valve, a second regulating valve and a third regulating valve; the first regulating valve, the second regulating valve and the third regulating valve are respectively arranged on the third pipeline, the second pipeline and the first pipeline.

Compared with the prior art, the utility model has the advantages of: the utility model discloses can provide the cold volume of the different warm areas more than three at least and realize the multistage separation, and then can carry out effective purification to the dirty helium that impurity composition is complicated to application scope has been enlarged and the purification effect has been improved.

Drawings

Fig. 1 is a sectional structure view of the present invention.

Detailed Description

Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by those of ordinary skill in the art to which the invention belongs. The use of "first," "second," and similar terms in the description herein do not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.

To maintain the following description of the embodiments of the present invention clear and concise, detailed descriptions of well-known functions and components may be omitted.

As shown in fig. 1, a helium purification device comprises a vacuum cover 12 and a main body arranged in the vacuum cover 12, wherein the main body comprises a primary heat exchanger 1, a secondary heat exchanger 2, a tertiary heat exchanger 3, a primary liquid separator 4, a secondary liquid separator 5, a tertiary liquid separator 6, a dirty helium inlet pipeline 14 and a pure helium exhaust pipeline 15; one end of a dirty helium inlet pipeline 14 is connected to a first interface 1a of a first-stage heat exchanger 1, a second interface 1b of the first-stage heat exchanger 1 is connected to a first interface 2a of a second-stage heat exchanger 2 through a first-stage liquid distributor 4, a second interface 2b of the second-stage heat exchanger 2 is connected to a first interface 3a of a third-stage heat exchanger 3 through a second-stage liquid distributor 5, a second interface 3b of the third-stage heat exchanger 3 is connected to a third interface 3d of the third-stage heat exchanger 3 through a third-stage liquid distributor 6, a fourth interface 3c of the third-stage heat exchanger 3 is connected to a third interface 2d of the second-stage heat exchanger 2, a fourth interface 2c of the second-stage heat exchanger 2 is connected to a third interface 1d of the first-stage heat exchanger 1, and one end of a pure helium exhaust pipeline.

The main body further comprises a refrigeration unit, wherein the refrigeration unit comprises a first pipeline 16, a second pipeline 17, a third pipeline 18, a fourth pipeline 19, a fifth pipeline 20, a sixth pipeline 21, a cold source 10, a circulating pump 11 and a heat exchanger 13; one end of a first pipeline 16 is connected with a fifth interface 1e of the first-stage heat exchanger 1, one end of a second pipeline 17 is connected with a fifth interface 2e of the second-stage heat exchanger 2, one end of a third pipeline 18 is connected with a fifth interface 3e of the third-stage heat exchanger 3, the other end of the first pipeline 16, the other end of the second pipeline 17 and the other end of the third pipeline 18 are connected in parallel to a liquid inlet of a circulating pump 11, and a liquid outlet of the circulating pump 11 is connected with a gas inlet of the heat exchanger 13; one end of a fourth pipeline 19 is connected with a sixth interface 1f of the primary heat exchanger 1, one end of a fifth pipeline 20 is connected with a sixth interface 2f of the secondary heat exchanger 2, one end of a sixth pipeline 21 is connected with a sixth interface 3f of the tertiary heat exchanger 3, and the other end of the fourth pipeline 19, the other end of the fifth pipeline 20 and the other end of the sixth pipeline 21 are connected in parallel and connected to a gas outlet of the heat exchanger 13; the refrigerant outlet of the cold source 10 is connected with the refrigerant inlet of the heat exchanger 13, and the refrigerant outlet of the heat exchanger 13 is connected with the refrigerant inlet of the cold source 10.

The refrigeration unit further comprises a first regulating valve 7, a second regulating valve 8 and a third regulating valve 9; the first regulating valve 7, the second regulating valve 8 and the third regulating valve 9 are respectively arranged on the third pipeline 18, the second pipeline 17 and the first pipeline 16.

The working principle is as follows:

helium purification work flow:

dirty helium enters the primary heat exchanger 1 through the other end of the dirty helium inlet pipeline 14 via the first connector 1a of the primary heat exchanger 1 and exchanges heat with the circulating gas to liquefy a first impurity gas, enters the secondary heat exchanger 2 via the second connector 1b of the primary heat exchanger 1, the primary liquid separator 4 and the first connector 2a of the secondary heat exchanger 2 to liquefy a second impurity gas, enters the tertiary heat exchanger 3 via the second connector 2b of the secondary heat exchanger 2, the secondary liquid separator 5 and the first connector 3a of the tertiary heat exchanger 3 to liquefy a third impurity gas, flows through the tertiary heat exchanger 3 again via the second connector 3b, the third connector 3d and the fourth connector 3c of the tertiary heat exchanger 3 to recover the cold energy of the helium, and flows through the secondary heat exchanger 2 again via the third connector 2d and the fourth connector 2c of the secondary heat exchanger 2 to recover the cold energy of the helium, then the helium flows through the first-stage heat exchanger 1 again through the third interface 1d and the fourth interface 1c of the first-stage heat exchanger 1 to recover the cold energy of the helium, and finally the helium with high purity is formed and is discharged outside through the pure helium exhaust pipeline 15; the first liquefied impurity gas is discharged to the outside when passing through the primary separator 4, the second liquefied impurity gas is discharged to the outside when passing through the secondary separator 5, and the third liquefied impurity gas is discharged to the outside when passing through the tertiary separator 6.

Working process of the refrigeration unit:

the gas obtains lower temperature after exchanging heat with the heat exchanger 13 and enters the sixth interface 1f of the primary heat exchanger 1, the sixth interface 2f of the secondary heat exchanger 2 and the sixth interface 3f of the tertiary heat exchanger 3 through the fourth pipeline 19, the fifth pipeline 20 and the sixth pipeline 21 respectively, then respectively enter the primary heat exchanger 1, the secondary heat exchanger 2 and the tertiary heat exchanger 3 and cool helium gas respectively positioned in the primary heat exchanger 1, the secondary heat exchanger 2 and the tertiary heat exchanger 3, then, the gas enters a first pipeline 16, a second pipeline 17 and a third pipeline 18 through a fifth interface 1e of the primary heat exchanger 1, a fifth interface 2e of the secondary heat exchanger 2 and a fifth interface 3e of the tertiary heat exchanger 3 after being heated, finally, returning to the heat exchanger 13 to cool again to form circulation, wherein the circulating pump 11 provides circulation power for the flow of the gas; the gas circulation volume in the third pipeline 18, the second pipeline 17 and the first pipeline 16 can be respectively controlled by adjusting the opening degree of the first adjusting valve 7, the second adjusting valve 8 and the third adjusting valve 9, so that the outlet temperature of the second interface 3b of the third-stage heat exchanger 3, the outlet temperature of the second interface 2b of the second-stage heat exchanger 2 and the outlet temperature of the second interface 1b of the first-stage heat exchanger 1 are controlled, and the liquefaction and solidification of impurities are realized by utilizing the difference of three phase points of different impurity gases to realize the purification of helium.

The utility model discloses can provide the cold volume of the different warm areas more than three at least and realize the multistage separation, and then can carry out effective purification to the dirty helium that impurity composition is complicated to application scope has been enlarged and the purification effect has been improved.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art that various changes in the embodiments and modifications thereof may be made, and equivalents may be substituted for elements thereof; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims

1. The helium purifying device is characterized by comprising a vacuum cover and a main body arranged in the vacuum cover, wherein the main body comprises a primary heat exchanger, a secondary heat exchanger, a tertiary heat exchanger, a primary liquid separator, a secondary liquid separator, a tertiary liquid separator, a dirty helium inlet pipeline and a pure helium exhaust pipeline; one end of the dirty helium inlet pipeline is connected to a first interface of the first-stage heat exchanger, a second interface of the first-stage heat exchanger is connected with a first interface of the second-stage heat exchanger through a first-stage liquid distributor, a second interface of the second-stage heat exchanger is connected with a first interface of the third-stage heat exchanger through a second-stage liquid distributor, a second interface of the third-stage heat exchanger is connected with a third interface of the third-stage heat exchanger through a third-stage liquid distributor, a fourth interface of the third-stage heat exchanger is connected with a third interface of the second-stage heat exchanger, a fourth interface of the second-stage heat exchanger is connected with a third interface of the first-stage heat exchanger, and one end of the pure helium exhaust pipeline is connected to a fourth interface of the first-stage heat exchanger.

2. The helium purification device of claim 1, wherein the body further comprises a refrigeration unit comprising a first conduit, a second conduit, a third conduit, a fourth conduit, a fifth conduit, a sixth conduit, a cold source, a circulation pump, and a heat exchanger; one end of the first pipeline is connected with a fifth interface of the first-stage heat exchanger, one end of the second pipeline is connected with a fifth interface of the second-stage heat exchanger, one end of the third pipeline is connected with a fifth interface of the third-stage heat exchanger, the other end of the first pipeline, the other end of the second pipeline and the other end of the third pipeline are all connected in parallel to a liquid inlet of a circulating pump, and the liquid outlet of the circulating pump is connected with a gas inlet of the heat exchanger; one end of the fourth pipeline is connected with a sixth interface of the primary heat exchanger, one end of the fifth pipeline is connected with a sixth interface of the secondary heat exchanger, one end of the sixth pipeline is connected with a sixth interface of the tertiary heat exchanger, and the other end of the fourth pipeline, the other end of the fifth pipeline and the other end of the sixth pipeline are connected in parallel and connected to a gas outlet of the heat exchanger; and a refrigerant outlet of the cold source is connected with a refrigerant inlet of the heat exchanger, and a refrigerant outlet of the heat exchanger is connected with a refrigerant inlet of the cold source.

3. The helium purification apparatus of claim 2, wherein said refrigeration unit further comprises a first regulating valve, a second regulating valve and a third regulating valve; the first regulating valve, the second regulating valve and the third regulating valve are respectively arranged on the third pipeline, the second pipeline and the first pipeline.